If your platform ever has to stop moving money, the stop is the easy half: switching it back on, one asset at a time, is the part that breaks.
CoinDesk reported on November 1 that Binance is reopening customer withdrawals in phases after a record $6.3 billion exploit, with bitcoin leading the first phase. The exploit is the headline. The phasing is the operational detail: resuming asset by asset means someone can gate withdrawals per asset and hold the requests that arrive while a gate is closed. It also means proving that balances still reconcile once the freeze lifts. In my experience with custodial wallets and payment rails, that machinery is either designed in before the incident or improvised under pressure at the worst possible moment, when every queued request is a customer waiting.
This is the kind of work I take on directly. Per-asset withdrawal flags, and a queue that holds and replays requests instead of dropping them. Then a reconciliation layer that flags unmatched movements rather than guessing. A focused review of an existing withdrawal path takes days, not months, and you get cost and timeline in writing within a day.
If you run custody or payouts, message me and I will walk through where your freeze-and-resume path breaks first.